Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Germanic *hwistlōną

→ English whistle (inherited)
→ Old English hwistlian (inherited)
→ Danish hviske (mention)
→ Old Swedish hvisla (inherited)
→ Scanian hvysla (inherited)
→ Old Norse hvísla (inherited)
→ Swedish vissla (inherited)